stubbs



No. 619,802. Patented Feb. 2|, I899- J. STUBBS.

EXCAVATING MACHINE.

(Application filed June 14, 1898.) (N 0 M 0 d e I.)

2 Sheets-Sheet I.

No. 6l9,802. Patented Feb. 2|, |a99.-

J. sTuBBs.

EXCAVATING MACHINE.

(Application filed June 14, 189B.)

2 Sheets-Sheet 2.

(No Model.)

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UNITED STATES PATENT OFFICE.

JESSE STUBBS, OF MOUNT PLEASANT, IOWA, ASSIGNOR TO THE IOWA BALLAST ANDIMPROVEMENT COMPANY, OF SAME PLACE.

EXCAVATlNG-MACHIN E.

SPECIFICATIONforming part of Letters Patent No. 619,802, dated February21, 1899.

Application filed June 14,1898. Serial No. 683,448. (No model.)

:[b all whom it may concern:

Be it known that I, J ESSE STUBBS, a citizen of the United States, and aresident of Mount Pleasant, in the county of Henry and State of Iowa,have invented certain new and useful Improvements inExcavating-Machines, of which the following is a specification,reference being had therein to the accompanying drawings.

The object of this invention is to provide an excavating-machine whichwill be especially adapted for use in forming drainingditches or fordoing other excavating work and for digging clay and depositing it upona kiln to be burned to form clay ballast for use on railway road-bedsand similar purposes.

The invention consists in the novel combination and arrangement of partshereinafter a detail end elevation thereof, and Fig. 4 is a detail viewof the clutch mechanism.

Referring to the various parts by letters and figures, A designates asuitable support mounted upon wheels and adapted to run on suitably-laidtracks. This support may be of any desired form, but is shown in thedrawings as. a railway box-car; Extending laterally from said supportisa frame E. This frame is supported at the upper end of thecar A and isprovided near its outer-end ,with a pair of guide-rollers Z, betweenwhich slide a guiderod F, whose lower end is secured to the center of ayoke f, the ends of whichare pivoted to the forward upper end of a scoopD. This scoop is tubular in form, its front edge inclining forward anddownward to form the lower cutting edge D, the yoke f being pivoted tothe scoop near the upper end of said inclined front edge. Near theforward end of the bottom of the scoop is pivoted the rear ends of abail or yoke e by means of eyes n, secured to the sides of the scoop. Tothis yoke is secured one end of a rope K, whose other end is passed overa pulley H, which is supported on the frame E, near the inner endthereof, and is then carried around a windingdrum C, mounted upon thesupport A.

lower ends.

The rear of the scoop is closed by a gate a,

which is pivoted to lugs secured upon the upper surface of the scoop.Upon the edge of the gate are formed two upward and forward extendingarms h, which extend between the pivot-lugs carried by the scoop, thepivotbolts 12 passing through these arms at their Connecting these armsh at their upper ends is a cross-bar c, which is formed midway betweenthe arms h with an eye, to which is connected a rope I. The other endof'this rope is carried overapulley G, secured to the outer end of theframe E, and is then carried to a winding-drum B, mounted on the supportA.

Mounted in suitable guides at the middle of thelower edge of the gate ais a spring latch bolt n, whose lower end engages a keeper 0, carried bythe rear edge of the bottom of the scoop, the spring m maintaining saidbolt in engagement with said keeper. Secured to said latch-bolt andextending rearward and downward therefrom is a trip-arm d, which isadapted to contact with a stop andrelease the gate to deposit thecontents of the scoop. p

Carried by the support A and extending longitudinally thereof under theinner end of the frame E. is a strongly-built stationary hopper M,whoseends are open and whose sides I) incline inward and downward, the bottomof said hopper being narrow and open, as shown. Below this hopper andrunning parallel therewith is a conveyer N, which receives the materialfrom the hopper M, the

bottom of the said hopper opening directly over the center of theconveyer N. This latter conveyer carries material to a conveyer L, whichprojects outward at right angles to conveyer M and extends a suitabledistance away from the support in order to deposit the material at thedesired place. This conveyer L is pivoted at its inner end on horizontalpivots h, and its outer end is supported and raised and lowered by meansof a rope m and suitable sheaves 2' and 7c, the latter being connectedto the outer end of the frame E. Any suitable mechanism may be employedfor actuating the conveyers and the winding-drums B and C.

If it is desired to limit the inward and upward movement of the scoop, abell-crank lever 1 is pivoted upon the support A above the hopper M insuch a position that the horizontal arm thereof will be engaged by thecutting edge of the scoop just as the load of material is dumped intothe hopper. To the vertical arm of the lever is secured cords or rods 2,which are connected to brake-straps 3. These straps are adapted to beapplied to the drums l3 and C to check the winding up of the ropes I andK. To release the drums from the driving mechanism at the instant thebrakes are applied, the drums are loosely mounted upon their shafts andare provided with clutches 4, which are released by means of levers 5and ropes 6. Ropes 6 are connected to ropes 2 in such a manner that apull on these latter ropes will apply the brakes and simultaneouslyrelease the clutches of the drums. By these means the scoops will bebrought to a stop in the proper position over the hopper and held thereuntil released and lowered. It also will be obvious that if the operatorfails to stop the drums at the proper instant no injury to the machinewill result, as the mechanism just described will automatically act.

The hopper M is rigidly mounted on the support A and is built verystrong in order to sustain the repeated shock of the material fallingfrom the scoop. The sides of the hopper are inclined toward each other,and the narrow bottom is left open in order to feed the depositedmaterial to the conveyerbelow without jar or shock to the conveyer. Thisconveyer is located a sufficient distance below hopper M to insure thematerial passing through the hopper-bottom and being spread upon theconveyer. The open ends of the hopper permit the material to slidelaterally from the hopper to the conveyer and permit the conveyer toreadily take the material from the hopper.

The mechanism for automatically stopping the scoop is shown merely inoutline in the drawings, and it may be varied as desired. It hastherefore been deemed unnecessary to illustrate this mechanism indetail.

The operation is as follows: When the parts are in the position shown indotted lines in Fig. 1, the rope K is wound on its drum and the scoop isdrawn toward the support A and takes up a scoopful of material. hen itis full, the ropes I and K are so manipulated that the scoop is raisedand carried inward to the top of the hopper M and is carried over thetop thereof rear end downward in such a manner that trip-arm (1 contactswith the outer top edge of the hopper and releases latchbolt 71 fromkeeper 0 and permits gate a to open and discharge the material into thehopper. The hopper receives the jolt and jar of the dumped scoop-loadand then permits the material to gradually slide through to the conveyerM, by which it is carried to conveyer L. By means of this latterconveyer the material is carried to the desired place of deposit. Afterthe scoop-load has been deposited the scoop is drawn outward by means ofthe rope I. The first pull on this rope through the medium of the arms hswings the gate a 011 its pivot and closes it and causes latch-bolt n toengage keeper 0. The scoop is then manipulated by means of the ropes Iand K until it is in position to take up another scoop-load. The rod Fguides the scoop and maintains it in its proper position for convenientmanipulation and prevents a too great lateral movement of the scoop.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

1. In an excavating-machine the combination of a support, a lateralframe extending therefrom, a scoop, ropes and winding-drums for raisingor lowering the scoop and for drawing it toward and from the support, ahopper carried by the support, said hopper being formed with downwardand inward inclined sides and an open bottom, a conveyer carried by thesupport below the hopper and adapted to receive the material from thehopper, and means for automatically dumping the scoopload into thehopper, substantially as described.

2. In an excavating-machine, the combination of a support, a lateralframe extending therefrom, a scoop, an end gate therefor, means forsecuring said gate in its closed position, means for raising andlowering the scoop and for drawing it toward and away from the support,a rigid hopper carried by the support, said hopper being formed withdownward and inward inclined sides and an open bottom, a conveyermounted on the support below the hopper and adapted to receive thematerial therefrom, and a device carried by the scoop end-gate andadapted to contact with the hopper and release the end-gate,substantially as described.

3. In an excavating-machine the combination of a support, a frameextending laterally therefrom, a hopper, a scoop, ropes for drawing saidscoop toward or away from the support, winding-drums for said ropes,brakes adapted to engage said drums, and a device in the path of thescoop and adapted to be engaged thereby after it has discharged itscontents into the hopper, means connecting said device to the brakes,substantially as described.

4. In an excavating-machine the combination of a support, a frameextending laterally therefrom, a scoop, ropes for manipulating thescoop, winding-drums for said ropes, said drums being loosely mounted ontheir shafts, brakes adapted to engage said drums,clutches carried bythe shafts of the winding-drums and adapted to engage the drums, adevice in the path of the scoop and adapted to be engaged thereby afterit has discharged its contents into the hopper, and means connectingthis device to the brakes and clutches of the winding drums, wherebysaid brakes and clutches will be simultaneously operated, substantiallyas described.

5. In an excavating-machine the 'combination of a support,aframeextendinglaterally therefrom, a scoop, an end-gate hinged to therear upper end thereof, a latch-bolt carried bysaid gate, a keeper forsaid bolt carried by the scoop, a trip-arm carried by said bolt, a fixedstop adapted to engage said trip-arm, a forwardly and upwardly extendingarm carried by the end-gate at its hinged end, a rope connected to saidarm wherebya pull on said rope will close the end-gate, a rope connectedto the forward end of the scoop, sheaves for said ropes, and suitablewinding-drums for said ropes carried by the support, substantially asdescribed.

6. In an excavating-scoop the combination of a tubular body portionhaving a forward cutting edge, means attached to the forward end thereofwhereby the scoop may be drawn forward, an end-gate for the rear end ofsaid scoop, said gate being pivoted to the upper side of the bodyportion, a spring latch-bolt carried by said gate, a keeper for saidbolt carried by the rear edge of the scoop, a triparm carried by thelatch-bolt and adapted to engage a stop torelease the latch-bolt, an upward-extending arm carried by the gate, said arm extending above theend-gate hinge, and a rope secured to said arm wherebyapull on said ropewill close the end-gate, substantially as and for the purposes setforth.

In testimony whereof I affix my signature in presence of two subscribingwitnesses.

JESSE STUBBS.

Witnesses:

O. M. DRUMMOND, WARREN B. STUBBs.

